A construction method of a flexible skeleton structure in a confined space

Abstract

The invention belongs to the technical field of building construction, and in particular relates to a construction method of a flexible skeleton structure in a limited space. The method performs rapid design of a flexible skeleton according to limited site construction conditions, and improves the efficiency of on-site processing of the skeleton structure; the method includes The first step is to install the workbench of the skeleton structure, and set the workbench above the slot hole of the forming enclosure structure to fix the flexible skeleton structure; the second step is to install the bottom rigid shaping frame; the third step is to install the longitudinal flexible rib and the central tie bar; the third step Four steps to assemble the circumferential stirrups and rigid sleeves; the fifth step to lower the skeleton structure; the sixth step to position the skeleton structure; finally pouring concrete to form; the construction method of the limited space flexible skeleton structure designed by the present invention can effectively realize the skeleton structure The on-site continuous production and decentralization function does not require transition joint connection in the middle, which improves the on-site processing efficiency, processing quality and installation accuracy of the skeleton structure, and is suitable for large-scale promotion and application.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a construction method of a flexible skeleton structure in a limited space. Background technique [0002] In the process of building construction, most of the construction enclosure structures of underground projects adopt the structural form of underground diaphragm walls and concrete pouring piles. These two maintenance structures have the advantages of high rigidity and good safety. When the buried depth is large, a large construction site needs to be occupied to meet the preparation requirements of the reinforcement cage; at the same time, when the construction site is limited, it is also necessary to divide the reinforcement cage into multiple sections, and connect the axial reinforcement cage while lowering the reinforcement cage body. steel bars, which directly lead to technical defects such as large number of intermediate joints, high construction...

AI Technical Summary

Problems solved by technology

[0002] In the process of building construction, most of the construction enclosure structures of underground projects adopt the structural form of underground diaphragm walls and concrete pouring piles. These two maintenance structures have the advantages of high rigidity and good safety. When the buried depth is large, a large construction site needs to be occupied to meet the preparation requirements of the reinforcement cage; at the same time, when the construction site is limited, it is also necessary to divide the reinforcement cage into multiple sections, and connect the axial reinforcement cage while lowering the reinforcement cage body. steel bars, which directly lead to technical defects such as large number of intermediate joints, high construction cost, long operation time, and difficulty in guaranteeing construction quality; Using high-strength and flexible steel strands, eliminating the need for axial steel joints, the continuous steel cage assembly is carried out above the drilled hole through the lowering device, which further shortens the installation time of the steel cage; however, this method is only applicable to cylindrical The construction of cast-in-situ piles with relatively short structure and relatively short length (not exceeding 20m); it is not suitable for the construction of special-shaped sections such as ground connection walls and the construction of ultra-deep foundation pit enclosure structures, and the construction method requires more equipment when hoisting the steel cage. Therefore, it is very necessary to design a construction method for a flexible skeleton structure in a confined space.

Images